Individual particle morphology, coatings, and impurities of black carbon aerosols in Antarctic ice and tropical rainfall

Aja Ellis, Ross Edwards, Martin Saunders, Rajan K. Chakrabarty, R. Subramanian, Nicholas E. Timms, Arie van Riessen, Andrew M. Smith, Dionisia Lambrinidis, Laurie J. Nunes, Paul Vallelonga, Ian D. Goodwin, Andrew D. Moy, Mark A J Curran, Tas D. van Ommen

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    Abstract

    Black carbon (BC) aerosols are a large source of climate warming, impact atmospheric chemistry, and are implicated in large-scale changes in atmospheric circulation. Inventories of BC emissions suggest significant changes in the global BC aerosol distribution due to human activity. However, little is known regarding BC's atmospheric distribution or aged particle characteristics before the twentieth century. Here we investigate the prevalence and structural properties of BC particles in Antarctic ice cores from 1759, 1838, and 1930 Common Era (C.E.) using transmission electron microscopy and energy-dispersive X-ray spectroscopy. The study revealed an unexpected diversity in particle morphology, insoluble coatings, and association with metals. In addition to conventionally occurring BC aggregates, we observed single BC monomers, complex aggregates with internally, and externally mixed metal and mineral impurities, tar balls, and organonitrogen coatings. The results of the study show BC particles in the remote Antarctic atmosphere exhibit complexity that is unaccounted for in atmospheric models of BC.

    Original languageEnglish
    Pages (from-to)11,875-11,883
    Number of pages9
    JournalGeophysical Research Letteres
    Volume43
    Issue number22
    DOIs
    Publication statusPublished - 28 Nov 2016

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    black carbon
    coating
    aerosols
    ice
    aerosol
    coatings
    impurities
    rainfall
    carbon
    atmospheric circulation
    tars
    atmospheric chemistry
    atmospheric models
    particle
    metal
    tar
    carbon emission
    ice core
    twentieth century
    metals

    Cite this

    Ellis, A., Edwards, R., Saunders, M., Chakrabarty, R. K., Subramanian, R., Timms, N. E., ... van Ommen, T. D. (2016). Individual particle morphology, coatings, and impurities of black carbon aerosols in Antarctic ice and tropical rainfall. Geophysical Research Letteres, 43(22), 11,875-11,883. https://doi.org/10.1002/2016GL071042
    Ellis, Aja ; Edwards, Ross ; Saunders, Martin ; Chakrabarty, Rajan K. ; Subramanian, R. ; Timms, Nicholas E. ; van Riessen, Arie ; Smith, Andrew M. ; Lambrinidis, Dionisia ; Nunes, Laurie J. ; Vallelonga, Paul ; Goodwin, Ian D. ; Moy, Andrew D. ; Curran, Mark A J ; van Ommen, Tas D. / Individual particle morphology, coatings, and impurities of black carbon aerosols in Antarctic ice and tropical rainfall. In: Geophysical Research Letteres. 2016 ; Vol. 43, No. 22. pp. 11,875-11,883.
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    abstract = "Black carbon (BC) aerosols are a large source of climate warming, impact atmospheric chemistry, and are implicated in large-scale changes in atmospheric circulation. Inventories of BC emissions suggest significant changes in the global BC aerosol distribution due to human activity. However, little is known regarding BC's atmospheric distribution or aged particle characteristics before the twentieth century. Here we investigate the prevalence and structural properties of BC particles in Antarctic ice cores from 1759, 1838, and 1930 Common Era (C.E.) using transmission electron microscopy and energy-dispersive X-ray spectroscopy. The study revealed an unexpected diversity in particle morphology, insoluble coatings, and association with metals. In addition to conventionally occurring BC aggregates, we observed single BC monomers, complex aggregates with internally, and externally mixed metal and mineral impurities, tar balls, and organonitrogen coatings. The results of the study show BC particles in the remote Antarctic atmosphere exhibit complexity that is unaccounted for in atmospheric models of BC.",
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    author = "Aja Ellis and Ross Edwards and Martin Saunders and Chakrabarty, {Rajan K.} and R. Subramanian and Timms, {Nicholas E.} and {van Riessen}, Arie and Smith, {Andrew M.} and Dionisia Lambrinidis and Nunes, {Laurie J.} and Paul Vallelonga and Goodwin, {Ian D.} and Moy, {Andrew D.} and Curran, {Mark A J} and {van Ommen}, {Tas D.}",
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    Ellis, A, Edwards, R, Saunders, M, Chakrabarty, RK, Subramanian, R, Timms, NE, van Riessen, A, Smith, AM, Lambrinidis, D, Nunes, LJ, Vallelonga, P, Goodwin, ID, Moy, AD, Curran, MAJ & van Ommen, TD 2016, 'Individual particle morphology, coatings, and impurities of black carbon aerosols in Antarctic ice and tropical rainfall', Geophysical Research Letteres, vol. 43, no. 22, pp. 11,875-11,883. https://doi.org/10.1002/2016GL071042

    Individual particle morphology, coatings, and impurities of black carbon aerosols in Antarctic ice and tropical rainfall. / Ellis, Aja; Edwards, Ross; Saunders, Martin; Chakrabarty, Rajan K.; Subramanian, R.; Timms, Nicholas E.; van Riessen, Arie; Smith, Andrew M.; Lambrinidis, Dionisia; Nunes, Laurie J.; Vallelonga, Paul; Goodwin, Ian D.; Moy, Andrew D.; Curran, Mark A J; van Ommen, Tas D.

    In: Geophysical Research Letteres, Vol. 43, No. 22, 28.11.2016, p. 11,875-11,883.

    Research output: Contribution to journalArticleResearchpeer-review

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    AU - Ellis, Aja

    AU - Edwards, Ross

    AU - Saunders, Martin

    AU - Chakrabarty, Rajan K.

    AU - Subramanian, R.

    AU - Timms, Nicholas E.

    AU - van Riessen, Arie

    AU - Smith, Andrew M.

    AU - Lambrinidis, Dionisia

    AU - Nunes, Laurie J.

    AU - Vallelonga, Paul

    AU - Goodwin, Ian D.

    AU - Moy, Andrew D.

    AU - Curran, Mark A J

    AU - van Ommen, Tas D.

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    N2 - Black carbon (BC) aerosols are a large source of climate warming, impact atmospheric chemistry, and are implicated in large-scale changes in atmospheric circulation. Inventories of BC emissions suggest significant changes in the global BC aerosol distribution due to human activity. However, little is known regarding BC's atmospheric distribution or aged particle characteristics before the twentieth century. Here we investigate the prevalence and structural properties of BC particles in Antarctic ice cores from 1759, 1838, and 1930 Common Era (C.E.) using transmission electron microscopy and energy-dispersive X-ray spectroscopy. The study revealed an unexpected diversity in particle morphology, insoluble coatings, and association with metals. In addition to conventionally occurring BC aggregates, we observed single BC monomers, complex aggregates with internally, and externally mixed metal and mineral impurities, tar balls, and organonitrogen coatings. The results of the study show BC particles in the remote Antarctic atmosphere exhibit complexity that is unaccounted for in atmospheric models of BC.

    AB - Black carbon (BC) aerosols are a large source of climate warming, impact atmospheric chemistry, and are implicated in large-scale changes in atmospheric circulation. Inventories of BC emissions suggest significant changes in the global BC aerosol distribution due to human activity. However, little is known regarding BC's atmospheric distribution or aged particle characteristics before the twentieth century. Here we investigate the prevalence and structural properties of BC particles in Antarctic ice cores from 1759, 1838, and 1930 Common Era (C.E.) using transmission electron microscopy and energy-dispersive X-ray spectroscopy. The study revealed an unexpected diversity in particle morphology, insoluble coatings, and association with metals. In addition to conventionally occurring BC aggregates, we observed single BC monomers, complex aggregates with internally, and externally mixed metal and mineral impurities, tar balls, and organonitrogen coatings. The results of the study show BC particles in the remote Antarctic atmosphere exhibit complexity that is unaccounted for in atmospheric models of BC.

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    KW - ice core

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    KW - particle characteristics

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    DO - 10.1002/2016GL071042

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